I suspect that the options available here are those that the article class knows, which is pretty limited. Have you tried using pandoc and pdflatex separately, and editing the intermediate .tex?
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Joseph Wright♦Mar 23 '11 at 19:55

No I have not - but I'll give it a shot. Ideally though, I'd like the process to be automated, and not have to edit an intermediate .tex file each time I want a PDF.
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user4402Mar 23 '11 at 20:36